The purpose of this study is to determine whether patients with spondyloarthritis are more satisfied with a physiotherapy-led outpatient clinic than usual care and whether there is a difference between patients in a physiotherapy-led outpatient clinic and those in usual care regarding disease activity, function and mobility.

Inclusion Criteria:

• confirmed diagnosis spondyloarthritis, ankylosing spondylitis, spondylarthropathy, juvenile ankylosing spondylitis, psoriatic arthritis with affection of the spine
• age between 18 and 45 (born 1969 - 1996)

Exclusion Criteria:

• also diagnosed with potentially functionally impairing neuromuscular, neurological or muscular disorders
• insufficient Norwegian language skills
• cognitive impairment
• no sign of inflammation or bone erosions in the sacroiliac joints or in the spine on imaging